# Classroom Noise Meter – Ruhe — Noise Monitor for Teachers

> Noise Monitor for Teachers (iPhone/iPad app by Felix Leitenberger.)

- Source: https://appshunter.io/ios/app/classroom-noise-meter-ruhe/id6817002986 (this page in markdown: same URL + `.md`)
- Developer: [Felix Leitenberger](https://appshunter.io/developer/1488329664)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 18 MB
- Languages: German (Germany), Danish, American English, Finnish, French (France), Italian, Japanese, Korean, Dutch, Norwegian Bokmål and 9 more
- Released: 2026-10-12
- Data updated: 2026-10-15

## What is Classroom Noise Meter?

Ruhe turns your iPad or iPhone into a friendly noise light for the classroom. A cheerful mascot shows at a glance how loud the room is – and quiet work gets rewarded instead of noise getting punished.

HOW IT WORKS
• Green: the mascot smiles – nice and quiet.
• Yellow: it gently says “shh” – a little quieter, please.
• Red: it covers its ears – and the flames go out.

COLLECT FLAMES
While the class stays quiet, one flame after another lights up around the mascot. Twelve flames complete the ring – time to celebrate! If it gets too loud, all flames go out. Only positive feedback, no scolding.

MADE FOR LESSONS
• Timer with ring display and start/stop button
• Projector view: show the noise light full screen on a second display while you keep the controls
• Adjustable sensitivity, or automatic calibration in 5 seconds
• Lock the controls with Face ID so nobody in class changes anything
• Light and dark appearance, screen stays on

PRIVATE BY DESIGN
Ruhe only measures the volume. Nothing is recorded, stored or sent. No account, no ads, no tracking.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://crabucate.de/ruhe-privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Ruhe Pro – Monthly | $1.99 | per month |
| Ruhe Pro – Yearly | $8.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Ruhe Pro – Lifetime | $22.99 | one-time |


## Is Classroom Noise Meter safe?

Not enough ratings yet to assess Classroom Noise Meter.

## Is Classroom Noise Meter legit?

Classroom Noise Meter – Ruhe appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Classroom Noise Meter is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-12

No release notes.

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## More apps by Felix Leitenberger

- [Scissors Paper Rock Game](https://appshunter.io/ios/app/scissors-paper-rock-game/id1614712641)
- [Split Any Group: Team Draw](https://appshunter.io/ios/app/split-any-group-team-draw/id6768655282)
- [Platzwahl – Sitzplan App](https://appshunter.io/ios/app/platzwahl-sitzplan-app/id6769323924)
- [Lehrer Arbeitszeit Tracker](https://appshunter.io/ios/app/lehrer-arbeitszeit-tracker/id6796359379)
- [Animal Cards: Daily Bestiary](https://appshunter.io/ios/app/animal-cards-daily-bestiary/id6808938974)

All apps by Felix Leitenberger: https://appshunter.io/developer/1488329664

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-15.*